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Implement load balance for cgroup2 #87

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merged 1 commit into from
Nov 26, 2024
Merged

Implement load balance for cgroup2 #87

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90 changes: 90 additions & 0 deletions bash/library/bench-base
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Original file line number Diff line number Diff line change
Expand Up @@ -121,3 +121,93 @@ function validate_clocksource() {
return 1
fi
}

function disable_balance_v1()
{
local cpulist="$1"; shift
local cpu=""
local file=
local flags_cur=
for cpu in `echo ${cpulist} | sed -e 's/,/ /g'`; do
for file in $(find /proc/sys/kernel/sched_domain/cpu$cpu -name flags -print); do
flags_cur=$(cat $file)
flags_cur=$((flags_cur & 0xfffe))
echo $flags_cur > $file
done
done
}

function enable_balance_v1()
{
local cpulist="$1"; shift
local cpu=""
local file=
local flags_cur=
for cpu in `echo ${cpulist} | sed -e 's/,/ /g'`; do
for file in $(find /proc/sys/kernel/sched_domain/cpu$cpu -name flags -print); do
flags_cur=$(cat $file)
flags_cur=$((flags_cur | 0x1))
echo $flags_cur > $file
done
done
}

function enable_balance_v2()
{
echo member > /sys/fs/cgroup/crucible_no_balance/cpuset.cpus.partition
echo -cpuset > /sys/fs/cgroup/cgroup.subtree_control
rmdir /sys/fs/cgroup/crucible_no_balance
}

function disable_balance_v2()
{
local cpulist="$1"; shift
echo +cpuset > /sys/fs/cgroup/cgroup.subtree_control
mkdir -p /sys/fs/cgroup/crucible_no_balance
echo $cpulist > /sys/fs/cgroup/crucible_no_balance/cpuset.cpus
echo isolated > /sys/fs/cgroup/crucible_no_balance/cpuset.cpus.partition
}

function enable_balance()
{
local cpulist="$1"; shift
local debug="$1"; shift

if [ -n "$debug" ]; then
echo Y > /sys/kernel/debug/sched/verbose
fi

cmd=$(mount | grep cgroup | awk '{ print $1 }')
if [[ "$cmd" =~ "cgroup2" ]]; then
enable_balance_v2
else
enable_balance_v1 $cpulist
fi

if [ -n "$debug" ]; then
echo N > /sys/kernel/debug/sched/verbose
fi
}

function disable_balance()
{
local cpulist="$1"; shift
local debug="$1"; shift

if [ -n "$debug" ]; then
echo Y > /sys/kernel/debug/sched/verbose
fi

cmd=$(mount | grep cgroup | awk '{ print $1 }')
if [[ "$cmd" =~ "cgroup2" ]]; then
disable_balance_v2 $cpulist
else
disable_balance_v1 $cpulist
fi

if [ -n "$debug" ]; then
echo N > /sys/kernel/debug/sched/verbose
fi
}


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